*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100dvh;
  background-color: var(--bg-primary);
  background-image: radial-gradient(ellipse 80% 50% at 50% -10%, var(--ambient-top), transparent);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.5;
  position: relative;
  overflow-x: hidden;
}

/* Top Menubar */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  padding: 24px 32px;
  display: flex;
  justify-content: center;
}

.top-menubar {
  display: flex;
  align-items: center;
  gap: 36px;
}

.menu-item {
  position: relative;
}

.menu-link {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  padding: 8px 4px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.menu-chevron {
  transition: transform var(--transition-fast);
  opacity: 0.75;
}

.menu-item.is-open > .menu-link .menu-chevron {
  transform: rotate(180deg);
}

@media (hover: hover) {
  .menu-item:hover > .menu-link,
  .menu-link:hover {
    color: var(--text-primary);
  }

  .menu-item.has-dropdown:hover > .menu-link .menu-chevron {
    transform: rotate(180deg);
  }
}

.menu-item.is-open > .menu-link {
  color: var(--text-primary);
}

.menu-link:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 4px;
  border-radius: 4px;
}

/* Dropdown Menus */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 210px;
  padding: 8px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

@media (hover: hover) {
  .menu-item.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
  }
}

.menu-item.has-dropdown.is-open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item,
.dropdown-item:visited,
.dropdown-item:hover {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 12px;
  border-radius: var(--radius-xs);
  text-decoration: none;
  transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
  background: rgba(50, 116, 246, 0.10);
}

.dropdown-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 13px;
  color: var(--text-primary);
}

.dropdown-status {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--badge-text);
  white-space: nowrap;
}

/* Exact Centered Brand Stage — fixed sizes, immune to window resize */
.center-stage {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.brand-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.center-symbol {
  height: 144px;
  width: auto;
  display: block;
  margin-bottom: -10px;
}

.center-wordmark {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 28px;
  line-height: 1.15;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.wordmark-amp {
  color: var(--accent-primary);
}

.center-subtitle {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

@media (max-width: 520px) {
  .site-header {
    padding: 14px 16px;
  }

  .top-menubar {
    gap: 14px;
  }

  .menu-link {
    font-size: 12px;
    min-height: 44px;
    padding: 10px 6px;
    gap: 4px;
  }

  .menu-item:first-child .dropdown-menu {
    left: 0;
    transform: translateY(6px);
  }

  .menu-item:first-child.is-open .dropdown-menu {
    transform: translateY(0);
  }
}